blob: 181b89b0b01ab8a6dc451fc6f612e8ed2ab120b9 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
|
#ifndef PKE_MEMORY_TYPE_DEFS_HPP
#define PKE_MEMORY_TYPE_DEFS_HPP
#include <cstdint>
using PkeHandleBucketIndex_T = uint32_t;
using PkeHandleItemIndex_T = uint32_t;
const uint8_t PKE_HANDLE_VALIDATION_VALID = 0;
const uint8_t PKE_HANDLE_VALIDATION_BUCKET_INDEX_TOO_HIGH = 1;
const uint8_t PKE_HANDLE_VALIDATION_ITEM_INDEX_TOO_HIGH = 2;
const uint8_t PKE_HANDLE_VALIDATION_VALUE_MAX = 3;
struct PkeHandle {
union {
struct {
PkeHandleBucketIndex_T bucketIndex;
PkeHandleItemIndex_T itemIndex;
};
uint64_t hash = 0xFFFFFFFFFFFFFFFF;
};
};
constexpr PkeHandle PkeHandle_MAX = PkeHandle{};
constexpr bool operator==(const PkeHandle &a, const PkeHandle &b) {
return a.hash == b.hash;
}
constexpr uint8_t ValidateHandle(PkeHandle handle, PkeHandle bucketHandle, uint64_t maxItems) {
if (handle == PkeHandle_MAX)
return PKE_HANDLE_VALIDATION_VALUE_MAX;
if (handle.bucketIndex > bucketHandle.bucketIndex)
return PKE_HANDLE_VALIDATION_BUCKET_INDEX_TOO_HIGH;
if (handle.itemIndex > maxItems)
return PKE_HANDLE_VALIDATION_ITEM_INDEX_TOO_HIGH;
if (handle.bucketIndex == bucketHandle.bucketIndex && handle.itemIndex > bucketHandle.itemIndex)
return PKE_HANDLE_VALIDATION_ITEM_INDEX_TOO_HIGH;
return PKE_HANDLE_VALIDATION_VALID;
}
struct MemBucket;
#endif /* PKE_MEMORY_TYPE_DEFS_HPP */
|
